Parque Nacional Volcán Nevado de Colima straddles the Colima–Jalisco border. It includes two dramatic volcanoes: the still-active Volcán de Fuego and the inactive Volcán Nevado de Colima. Returi is one of the area’s best adventure tour operator. It runs day trips from Colima to Volcán Nevado de Colima’s peak, with English-speaking guides. Tours cost M$800 to M$1304, which includes transportation and entry fees. But you must book in advance. It can be difficult to find a guide on the fly if you only have a few days.